Corrections & Contact

Found a source we missed, a broken link or a statement that needs correcting? Make it easy to tell us.

Corrections should be traceable

Substantive evidence corrections should record what changed and why. Small spelling or formatting fixes do not need to be treated as scientific revisions.

Contact WhichPeps

Report an evidence issue
Suggest a source
Report a technical problem
General contact

What helps us check a correction?

  • The page or compound involved.
  • The exact statement you think needs changing.
  • A primary source or regulatory document when available.
  • A short explanation of the issue.